By: sampath.kumar

sampath.kumar — Wed, 17 Jul 2013 07:55:14 +0000

RCS file: basicregister.c,v
Working file: basicregister.c
head: 1.23
branch:
locks: strict
sampath: 1.23
access list:
symbolic names:
keyword substitution: kv
total revisions: 23; selected revisions: 23
description:
Base program for driver
Registering the driver into the kernel using register_chrdev
inserting the module using insmod
unregistering using unregister_chrdev
removing the module using rmmod
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revision 1.23 locked by: sampath;
date: 2013/07/17 05:19:21; author: sampath; state: Exp; lines: +75 -28
Defined llseek function mapped from function call
Able to read data from application according to lseek offset in application
done with read operation using lseek
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revision 1.22
date: 2013/07/13 11:04:51; author: sampath; state: Exp; lines: +15 -54
done with read and write operations for multiple scullqsets
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revision 1.21
date: 2013/07/13 10:43:24; author: sampath; state: Exp; lines: +1 -1
added ubuff+tnobsr in copy_to_user for cursor position
able to read data at the application
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revision 1.20
date: 2013/07/13 10:17:59; author: sampath; state: Exp; lines: +35 -26
sucessfully Implemented reading operation for 98 bytes of data
able to read tnobsr in application
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revision 1.19
date: 2013/07/13 07:17:49; author: sampath; state: Exp; lines: +20 -13
new
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revision 1.18
date: 2013/07/13 04:52:08; author: sampath; state: Exp; lines: +49 -36
Able to read 63 bytes of data from kernel to user buffer.
verification done by returning tnobsr to user application.
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revision 1.17
date: 2013/07/12 08:12:41; author: sampath; state: Exp; lines: +80 -11
Implemented read operation trying to read from kernel to user buffer using copy_to_user
Able to read only 8bytes of data
tryin g to implement for complete read operation for reading 100bytes
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revision 1.16
date: 2013/07/11 20:56:23; author: sampath; state: Exp; lines: +5 -10
Able to return 0 from read operation of kernel buffer to application
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revision 1.15
date: 2013/07/11 20:10:35; author: sampath; state: Exp; lines: +34 -25
Sucessfully implemented for multiple qsets
Tested writing operation for 100 bytes of data
no of scull qset are 2 and no of quantums created are 13
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revision 1.14
date: 2013/07/11 11:12:47; author: sampath; state: Exp; lines: +33 -10
sucessfully implemented write operation for multiple quantums
able to automate correct no of quantums
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revision 1.13
date: 2013/07/11 07:57:21; author: sampath; state: Exp; lines: +24 -7
Sucessfully implemented write operation
using kernel facility copy_from_user
testing for only 4bytes of data for which one quantum is enough
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revision 1.12
date: 2013/07/10 11:43:26; author: sampath; state: Exp; lines: +75 -21
Implementation of scullqset, qset and quantum done
automated number of scullqsets and quantums wrt the application
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revision 1.11
date: 2013/07/10 03:53:40; author: sampath; state: Exp; lines: +120 -34
Implemeenting write operation
fetched private->data to sculldev
Implemented auto calculation for number of scull_qset and number of quantums
allocated memory for scull_qset qset and quantum calling their functions separately and trying to link them
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revision 1.10
date: 2013/07/09 07:28:58; author: sampath; state: Exp; lines: +22 -0
Implemented basic write and read operations
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revision 1.9
date: 2013/07/08 07:27:12; author: sampath; state: Exp; lines: +39 -41
Implementation of scull_trim for future use
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revision 1.8
date: 2013/07/05 04:53:38; author: sampath; state: Exp; lines: +1 -1
Initialised cdev_del after completing the usage of cdev
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revision 1.7
date: 2013/07/05 04:51:02; author: sampath; state: Exp; lines: +9 -8
Added ret_cdev to check the return value of cdev_add
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revision 1.6
date: 2013/07/04 13:07:35; author: sampath; state: Exp; lines: +17 -7
Initialising multiple devices
assining dev using MKDEV
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revision 1.5
date: 2013/07/04 11:03:31; author: sampath; state: Exp; lines: +23 -10
memory mapping through container_of
pointing scull through inode
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revision 1.4
date: 2013/07/03 10:49:38; author: sampath; state: Exp; lines: +19 -2
Assigning values to members of sculldev in scullinit and printing
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revision 1.3
date: 2013/07/02 13:40:19; author: sampath; state: Exp; lines: +17 -2
Initialised function for scull_open
and scull close
calling open function from application
communicating from user spaceapplication to kernelspace driver
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revision 1.2
date: 2013/07/02 10:34:24; author: sampath; state: Exp; lines: +44 -4
Implemented struct scull
registering the device in device table
Initialized cdev_init
pointing to dev through cdev
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revision 1.1
date: 2013/07/01 07:16:06; author: sampath; state: Exp;
Initial revision
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By: sampath.kumar